Classification
380 - Commerce, communications & transportation
576 - Genetics & evolution
2
620 - Engineering & allied operations
658 - General management
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
363 - Other social problems & services
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
610 - Medicine & health
1
900 - History & geography
1